Alright, let's solve this math problem step by step. First, we have the number 923. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 172. So, we're going to take the number 923 and add it to itself 172 times.
Step 1: 0 + 923 = 923
Step 2: 923 + 923 = 1846
Step 3: 1846 + 923 = 2769
Step 4: 2769 + 923 = 3692
Step 5: 3692 + 923 = 4615
Step 6: 4615 + 923 = 5538
Step 7: 5538 + 923 = 6461
Step 8: 6461 + 923 = 7384
Step 9: 7384 + 923 = 8307
Step 10: 8307 + 923 = 9230
Step 11: 9230 + 923 = 10153
Step 12: 10153 + 923 = 11076
Step 13: 11076 + 923 = 11999
Step 14: 11999 + 923 = 12922
Step 15: 12922 + 923 = 13845
Step 16: 13845 + 923 = 14768
Step 17: 14768 + 923 = 15691
Step 18: 15691 + 923 = 16614
Step 19: 16614 + 923 = 17537
Step 20: 17537 + 923 = 18460
Step 21: 18460 + 923 = 19383
Step 22: 19383 + 923 = 20306
Step 23: 20306 + 923 = 21229
Step 24: 21229 + 923 = 22152
Step 25: 22152 + 923 = 23075
Step 26: 23075 + 923 = 23998
Step 27: 23998 + 923 = 24921
Step 28: 24921 + 923 = 25844
Step 29: 25844 + 923 = 26767
Step 30: 26767 + 923 = 27690
Step 31: 27690 + 923 = 28613
Step 32: 28613 + 923 = 29536
Step 33: 29536 + 923 = 30459
Step 34: 30459 + 923 = 31382
Step 35: 31382 + 923 = 32305
Step 36: 32305 + 923 = 33228
Step 37: 33228 + 923 = 34151
Step 38: 34151 + 923 = 35074
Step 39: 35074 + 923 = 35997
Step 40: 35997 + 923 = 36920
Step 41: 36920 + 923 = 37843
Step 42: 37843 + 923 = 38766
Step 43: 38766 + 923 = 39689
Step 44: 39689 + 923 = 40612
Step 45: 40612 + 923 = 41535
Step 46: 41535 + 923 = 42458
Step 47: 42458 + 923 = 43381
Step 48: 43381 + 923 = 44304
Step 49: 44304 + 923 = 45227
Step 50: 45227 + 923 = 46150
Step 51: 46150 + 923 = 47073
Step 52: 47073 + 923 = 47996
Step 53: 47996 + 923 = 48919
Step 54: 48919 + 923 = 49842
Step 55: 49842 + 923 = 50765
Step 56: 50765 + 923 = 51688
Step 57: 51688 + 923 = 52611
Step 58: 52611 + 923 = 53534
Step 59: 53534 + 923 = 54457
Step 60: 54457 + 923 = 55380
Step 61: 55380 + 923 = 56303
Step 62: 56303 + 923 = 57226
Step 63: 57226 + 923 = 58149
Step 64: 58149 + 923 = 59072
Step 65: 59072 + 923 = 59995
Step 66: 59995 + 923 = 60918
Step 67: 60918 + 923 = 61841
Step 68: 61841 + 923 = 62764
Step 69: 62764 + 923 = 63687
Step 70: 63687 + 923 = 64610
Step 71: 64610 + 923 = 65533
Step 72: 65533 + 923 = 66456
Step 73: 66456 + 923 = 67379
Step 74: 67379 + 923 = 68302
Step 75: 68302 + 923 = 69225
Step 76: 69225 + 923 = 70148
Step 77: 70148 + 923 = 71071
Step 78: 71071 + 923 = 71994
Step 79: 71994 + 923 = 72917
Step 80: 72917 + 923 = 73840
Step 81: 73840 + 923 = 74763
Step 82: 74763 + 923 = 75686
Step 83: 75686 + 923 = 76609
Step 84: 76609 + 923 = 77532
Step 85: 77532 + 923 = 78455
Step 86: 78455 + 923 = 79378
Step 87: 79378 + 923 = 80301
Step 88: 80301 + 923 = 81224
Step 89: 81224 + 923 = 82147
Step 90: 82147 + 923 = 83070
Step 91: 83070 + 923 = 83993
Step 92: 83993 + 923 = 84916
Step 93: 84916 + 923 = 85839
Step 94: 85839 + 923 = 86762
Step 95: 86762 + 923 = 87685
Step 96: 87685 + 923 = 88608
Step 97: 88608 + 923 = 89531
Step 98: 89531 + 923 = 90454
Step 99: 90454 + 923 = 91377
Step 100: 91377 + 923 = 92300
Step 101: 92300 + 923 = 93223
Step 102: 93223 + 923 = 94146
Step 103: 94146 + 923 = 95069
Step 104: 95069 + 923 = 95992
Step 105: 95992 + 923 = 96915
Step 106: 96915 + 923 = 97838
Step 107: 97838 + 923 = 98761
Step 108: 98761 + 923 = 99684
Step 109: 99684 + 923 = 100607
Step 110: 100607 + 923 = 101530
Step 111: 101530 + 923 = 102453
Step 112: 102453 + 923 = 103376
Step 113: 103376 + 923 = 104299
Step 114: 104299 + 923 = 105222
Step 115: 105222 + 923 = 106145
Step 116: 106145 + 923 = 107068
Step 117: 107068 + 923 = 107991
Step 118: 107991 + 923 = 108914
Step 119: 108914 + 923 = 109837
Step 120: 109837 + 923 = 110760
Step 121: 110760 + 923 = 111683
Step 122: 111683 + 923 = 112606
Step 123: 112606 + 923 = 113529
Step 124: 113529 + 923 = 114452
Step 125: 114452 + 923 = 115375
Step 126: 115375 + 923 = 116298
Step 127: 116298 + 923 = 117221
Step 128: 117221 + 923 = 118144
Step 129: 118144 + 923 = 119067
Step 130: 119067 + 923 = 119990
Step 131: 119990 + 923 = 120913
Step 132: 120913 + 923 = 121836
Step 133: 121836 + 923 = 122759
Step 134: 122759 + 923 = 123682
Step 135: 123682 + 923 = 124605
Step 136: 124605 + 923 = 125528
Step 137: 125528 + 923 = 126451
Step 138: 126451 + 923 = 127374
Step 139: 127374 + 923 = 128297
Step 140: 128297 + 923 = 129220
Step 141: 129220 + 923 = 130143
Step 142: 130143 + 923 = 131066
Step 143: 131066 + 923 = 131989
Step 144: 131989 + 923 = 132912
Step 145: 132912 + 923 = 133835
Step 146: 133835 + 923 = 134758
Step 147: 134758 + 923 = 135681
Step 148: 135681 + 923 = 136604
Step 149: 136604 + 923 = 137527
Step 150: 137527 + 923 = 138450
Step 151: 138450 + 923 = 139373
Step 152: 139373 + 923 = 140296
Step 153: 140296 + 923 = 141219
Step 154: 141219 + 923 = 142142
Step 155: 142142 + 923 = 143065
Step 156: 143065 + 923 = 143988
Step 157: 143988 + 923 = 144911
Step 158: 144911 + 923 = 145834
Step 159: 145834 + 923 = 146757
Step 160: 146757 + 923 = 147680
Step 161: 147680 + 923 = 148603
Step 162: 148603 + 923 = 149526
Step 163: 149526 + 923 = 150449
Step 164: 150449 + 923 = 151372
Step 165: 151372 + 923 = 152295
Step 166: 152295 + 923 = 153218
Step 167: 153218 + 923 = 154141
Step 168: 154141 + 923 = 155064
Step 169: 155064 + 923 = 155987
Step 170: 155987 + 923 = 156910
Step 171: 156910 + 923 = 157833
Step 172: 157833 + 923 = 158756

So, 923*172 = 158756